在Mac (OS-X, MacOS)上,内置的转换是精确的,你可以选择sprintf()带有'%。1074 f的格式。例如,gydF4y2Ba
> > sprintf (gydF4y2Ba“% .1074f”gydF4y2Ba每股收益(最小正浮点数)gydF4y2Ba
ans =gydF4y2Ba
“0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004940656458412465441765687928682213723650598026143247644255856825006755072702087518652998363616359923797965646954457177309266567103559397963987747960107818781263007131903114045278458171678489821036887186360569987307230500063874091535649843873124733972731696151400317153853980741262385655911710266585566867681870395603106249319452715914924553293054565444011274801297099995419319894090804165633245247571478690147267801593552386115501348035264934720193790268107107491703332226844753335720832431936092382893458368060106011506169809753078342277318329247904982524730776375927247874656084778203734469699533647017972677717585125660551199131504891101451037862738167250955837389733598993664809941164205702637090279242767544565229087538682506419718265533447265625的gydF4y2Ba
对于较大的值,您可能希望从转换后的字符串中去掉末尾的零gydF4y2Ba
val =π* 1 e - 200;gydF4y2Ba
regexprep (sprintf (gydF4y2Ba“% .1074f”gydF4y2Ba, val),gydF4y2Ba“0 + $”gydF4y2Ba,gydF4y2Ba''gydF4y2Ba,gydF4y2Ba“lineanchors”gydF4y2Ba)gydF4y2Ba
ans =gydF4y2Ba
“0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003141592653589793111936498419027683964072757959391149845317813416927695644722162706379483043156554579881967829022575831926635177847590589777088086173081089243142930507159490615800591052996089483276727788901006686618108987452642387169053033459820326372299902201815389727889699071056417123601253516892437642498120285079407325647552658339885701180059456745257476645670329996938769926310811984167666114826593537757304481509915842491117931968666219637406979734598283259283758102504979792257699955371208488941192626953125的gydF4y2Ba
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